Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual era a equipe visitante nas semanas abaixo de 12 e no Sports Authority Field at Mile High?
 ###Tabelas: CREATE TABLE 2011_season (2011_season_id AUTO_INCREMENT PRIMARY KEY, Week INT, Date VARCHAR, Visiting Team VARCHAR, Final Score VARCHAR, Host Team VARCHAR, Stadium VARCHAR) CREATE TABLE pittsburgh_pirates_vs._atlanta_braves (pittsburgh_pirates_vs._atlanta_braves_id AUTO_INCREMENT PRIMARY KEY, Game INT, Date VARCHAR, Location VARCHAR, Time VARCHAR, Attendance INT) CREATE TABLE britain (britain_id AUTO_INCREMENT PRIMARY KEY, Name dates VARCHAR, Eldest daughter from (date) to (date) VARCHAR, Father VARCHAR, Date married VARCHAR, Husband dates VARCHAR) CREATE TABLE taiwan (taiwan_id AUTO_INCREMENT PRIMARY KEY, 2010 ARWU Rankings VARCHAR, 2010 QS World Rankings VARCHAR, 2010 QS Asian Rankings VARCHAR, 2010 eduniversal Rankings VARCHAR, 2009 QS Asian Rankings: Int’l faculty review VARCHAR, 2009 QS Asian Rankings: Int’l student review INT, 2000 Singapore “Asiaweek” Rankings VARCHAR, University VARCHAR, Local VARCHAR, Median ranks INT) CREATE TABLE 1928 (1928_id AUTO_INCREMENT PRIMARY KEY, meas. num INT, passed VARCHAR, YES votes INT, NO votes INT, % YES VARCHAR, Const. Amd.? VARCHAR, type VARCHAR, description VARCHAR)  
SELECT Visiting Team FROM 2011_season WHERE Week < 12 AND Stadium = sports authority field at mile high